Product Details | FLAT WASHER

5310-00-491-1501 A washer having a centrally located hole with a solid or laminated cross-section and two flat parallel bearing surfaces. The hole must be 75 percent or less than the largest dimension and the bearing surface finish is greater than 32 microinch (0.8 micrometer). The thickness cannot exceed 25 percent of the largest outside dimension. When the largest outside dimension is less than 1/4 inch or 6mm, the thickness must be 0.006 inches (0.15mm) or greater and for items 1/4 inch (6mm) or larger, the thickness must be 0.016 inches (0.4mm) or greater. The maximum tolerance is applied to dimensions and used as a determining factor. Items with separable lamination use SHIM. For items fabricated from ceramic or electrically rated materials by specification or industry standards use INSULATOR (1), WASHER. Excludes DISK, VALVE, graphite impregnated and lubricated items.

Part Alternates: 5310-00-491-1501, 00-491-1501, 5310004911501, 004911501

Hardware and Abrasives | Nuts and Washers

Supply Group (FSG) NSN Assign. NIIN
53 00-491-1501

Drawings & Photos | NSN 5310-00-491-1501


Cross Reference | NSN 5310-00-491-1501

Part Number Cage Code Manufacturer
1JA2633H20 97942 NORTHROP GRUMMAN SYSTEMS CORPORATION DIV NORTHROP GRUMMAN SYSTEMS
25807-3 79318 MEGGITT (NORTH HOLLYWOOD), INC.
NAS43DD1-2 80205 NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES
NAS43DD1-2N 80205 NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES

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Technical Data | NSN 5310-00-491-1501

Characteristic Specifications
MATERIAL ALUMINUM ALLOY OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION QQ-A-250/8 H32 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT OXIDE FILM OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION MIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
HOLE DIAMETER 0.144 INCHES MINIMUM AND 0.154 INCHES MAXIMUM
PERIPHERAL SHAPE STYLE 1 ROUND
OVERALL DIAMETER 0.230 INCHES MINIMUM AND 0.270 INCHES MAXIMUM
CENTER HOLE SHAPE STYLE 1 ROUND
CROSS-SECTIONAL SHAPE STYLE 1 RECTANGULAR
THICKNESS 0.027 INCHES MINIMUM AND 0.037 INCHES MAXIMUM
MANUFACTURERS CODE 97942
DESIGN CONTROL REFERENCE 1JA2633H20

Restrictions/Controls & Freight Information | NSN 5310-00-491-1501

Category Code Description
Hazardous Material Indicator CodeNThere is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials
Category Code Description
No Freight Information